RECOMMENDATORY NOTICES. 



OPINION OF THE HON. G. C. VERPLANCK. 



Late United States Senator from New York ; and now one of the Trustees of 

 the Public Schools. 



New York, Feb. 7, 1842. 

 Messrs. Turner & Fisher. 

 Gentlemen, — I find among other papers which my absence from the city 

 has occasioned me to neglect, a note from you accompanying Dr. Rnschen. 

 berger's little work on Natural History, which was received on the day I left 

 town for an absence of some time. 



I have since examined the volume with much pleasure. I think it exceed- 

 ingly well executed, communicating much information in an unpretending 

 manner, and calculated to be very useful and acceptable to those for whom 

 it is specially designed, I am, your ob'dt serv't, 



G. C. VERPLANCK. 



OPINION OF S. S. HALDEMAN, ESQ. 

 Zoologist and Lecturer on Zooloyy. 



Philadelphia, February, 1842. 

 Messrs. Turner & Fisher. 

 I have seen no work of the same extent, which contains so much useful 

 matter on Zoology, as the " Elements" of Milne Edwards ; and Dr. Rus- 

 chenberger deserves the thanks of the public for making it the basis of 

 of his Zoological volumes. His additions to the part devoted to "Mammalo- 

 gy," are judicious ; and his constant adherence to the true, or scientific names 

 of animals, is a step to which the authorsof elementary works seldom advance. 

 For this feature, and the glossary of technical terms, the student will be 

 greatly indebted to him. I can confidently recommend the " Mammalogy" 

 as better calculated to fulfil the objects intended, than any other work with 

 which I am acquainted. Yours, &c. 



S. S. HALDEMAN. 



OPINION J. AUGUSTINE SMITH, M. D. 



President of the College of Physicians and Surgeons, and Professor of Phy- 

 siology, Crosby Street School. 



No, 5 Carroll Place, New York, Jan. 20, 1842. 

 Messrs. Turner &, Fjsher. 

 Gentlemen, — I have received and examined your " Second Book of Natural 

 History, prepared by Dr. Ruschenberger," and I can truly say I am ac- 

 quainted with no work of the same size containing an equal amount of use- 

 ful, accurate, and entertaining knowledge. I therefore hope and believe it 

 will not fail to receive the encouragement extended to the first volume of 

 the series. Respectfully, your ob't serv't, 



J. AUGUSTINE SMITH. 



OPINION OF ALBAN GOLDSMITH, M. D. 



New York, Jan. 17, 1842. 

 Messrs. Turner & Fisher. 

 Gentlemen, — I have received your Second Book of Natural History, pre- 

 pared for the use of schools. I am very much pleased to hear that your 

 First Book has been adopted by the Public Schools in Pennsylvania, and I 

 trust the example will soon be followed by all the States of the Union, for 

 nothing expands Uie mind so much as the book of Nature. And I look 

 upon the introduction of the study of Natural History into common schools 

 as a bright spot in the progress of mental culture. 



Yours, truly, 

 ALBAN GOLDSMITH. 



